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Finding the Fourth Proportional to 69,345.60, 104,250.42 and 54,730.68

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Solution

The fourth proportional to 69,345.60, 104,250.42 and 54,730.68 is: 82,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,345.60 : 104,250.42 = 54,730.68 : x
  2. Step 2: Convert to fraction form
    69,345.60/104,250.42 = 54,730.68/x
  3. Step 3: Cross multiply
    69,345.60x = 104,250.42 × 54,730.68
  4. Step 4: Simplify right side
    69,345.60x = 5,705,696,376.89
  5. Step 5: Solve for x
    x = 5,705,696,376.89/69,345.60
  6. Step 6: Final answer
    x = 82,279.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.